Process of producing inlaid work and the like



J. KAUFMANN. PROCESS OF PRODUCING INLAID WORK AND THE LIKE. APPLICATIONFILED JAN. 8, ISIS. RENEWED MAR. 27, I917.

1A1 6,212. atented May 16, 1922.

IKau/mann.

in 0622 for OFFICE.

JACOB KAUFMANN, OF WIIAMEBSDO'RF, GERMANY.

PROCESS OF PRODUCING- INLAID WORK AND THE LIKE.

Specification of Letters Patent. I Patentgd )[ay 16, 1922 Applicationfiled January 8, 1913, Serial No. 740,771. Renewed March 27, 1917.Serial No. 157,855.

To all whom it may concern:

Be it known that I, JACOB KAUFMANN, a subject of the German Emperor, andresiding at No. 172 Kaiserallee, Wilmersdorf, Qermany, have inventedcertain new and useful Improvements in Process of Producing Inlaid Workand the like, of which the following is a specification.

This invention relates to the of inlaid work.

It has been proposed to press metal inlay ornaments cut from a plateinto a veneer of wood, so as to fill the interstices between the inlayornaments with wood.

It has also been proposed to stamp an embossed design in a metal plateand to press on to the embossed plate a veneer of wood so that the woodenters the recesses of the metal plate, and then to grind away theprojecting portions of the wood so as to produce an imitation of tarsiainlaid work.

In carrying out the first of those two known processes the tarsia inlayshad to be sawn out and then assembled on a foundation to which they hadto be fixed, for instance by cementing or, the like, whilst in thesecond of those processes amould corresponding to the embossed designwas necessary, for pressing the wood veneer and the metal together.

The object of the invention is to provide an improved process for theproduction of inlaid Work.

The invention consists broadly in a process which comprises formingdepressions in one face of a metal plate, pressing together productionthe plate and a veneer of wood and grinding away the wood until levelwith the face of the metal plate.

The invention is illustrated by way of example in the accompanyingdrawings in which: 7

Figure 1 shows a plate prepared according to the improved process beforethe wood is ground away.

Figure 2 represents a section of an inlaid plate comprising a modifiedform of plate having further depressions provided in the recesses inorder more securely to hold the wood in position.

Figure 3 represents a further modification of the metal plateillustrated in Figure 1, the recesses for holding the inlay beingprovided in the face of the plate and other recesses on the back of theplate, the purpose of which is to facilitate securing the inlaid plateto a. foundation.

Figure 4 represents a metal plate as shown in'Figure 3 but with the woodin situ.

In the example shown in Figure l the recesses 4 in the face of the metalplate have been formed byetching or the like, the back of the plate isleft smooth and the wood veneer 3 is pressed upon the recessed face ofthe plate 1, as shown, and then ground away along the section line AB.

The process for forming the plate illustrated by Figure 2 is carried outas follows After the metal plate has been recessed for example byetching by a first etching process, the ground of the said recesses isprovided with a screen or resisting design and 4c is prepared as followsThe metal plate 1 is first provided, by means of a first etching processwith recesses for receiving the wood veneer. Then the back of the metalplate is furnished with a protective screen or resisting coating and isexposed to the action of an etchlng fluid. At those parts which are notprotected, channels 6 are formed which lead into the mass of the metaland which break through the ground of the recesses. At the same timethose parts which are situated under the ornaments that are leftstanding, are provided I with a number of depressions 7 which are ofconsiderable value in enabling the metal to be securely glued orcemented to a suitable foundation without further preparation.

Then the woodveneer is pressed into the recesses, 30 that it extendsthrough the channels 6 to the back of the plate. The roughened portions,that is to say, channels situated under the standing ornaments remainempty.

Figure 4, as previously stated, represents the completed piece of inlaidwork with the wood in 'situ.

It is to be understood that in etching the plates instead of usingprotective screens or resisting coatings other means of protection maybe employed, for instance a fabric stencil soaked with an acid-proofliquid may be cemented to the surface which it is desired to etch, andthen the etching may be effected in the usual manner. The formation ofsuitable plates by casting stamping, rolling or electrotyping needs nospecial description.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is l. A process for the production of inlaidwork comprising the following steps: forming depressions or recesses inone face of a metal plate; pressing together the plate and a sheet ofwood veneer, and grinding away the wood until level with the face of themetal plate.

2. A process for the production of inlaid work comprising the followingsteps: forming depressions orrecesses in one face of a metal plateforming. further depressions in the base of the recesses; pressingtogether the plate and a sheet of wood veneer and grinding away the wooduntil level with the face of the metal plate.

3. A process for the production of inlaid work and the like comprisingthe following steps: etching depressions or recesses in one face of ametal plate; pressing the plate and a sheet of wood veneer together andgrinding away the wood until level with the face of the metal plate.

4. A process for the production of inlaid work and the like comprisingthe following steps: etching depressions or recesses in one face of ametal plate; etching further (lepressions in the base of the saidrecesses; pressing the plate into a sheet of wood veneer and grindingaway the wood until level with the face of the metal plate.

In testimony whereof I aflix my signature in presence of two witnesses.

JACOB KAUFMANN.

Witnesses WOLDEMAR HAUPT, HENRY HAsPER.

